A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5905-00-246-6672
NSN 5965-01-142-8044
NSN 5998-01-150-4320
NSN 2925-01-359-9818
NSN 6620-01-231-9731
NSN 5925-00-955-0659
NSN 4140-01-397-0135
NSN 5996-00-280-8980
NSN 6645-01-533-3786
NSN 5855-00-797-8217
NSN 6130-00-277-7321
NSN 5945-01-604-3822